Symmetric tensor ε_{ij} = ½(∂u_i/∂x_j + ∂u_j/∂x_i) capturing local deformation of a body relative to its reference configuration, valid for small displacement gradients.
Symmetric tensor ε_{ij} = ½(∂u_i/∂x_j + ∂u_j/∂x_i) capturing local deformation of a body relative to its reference configuration, valid for small displacement gradients.